Here’s part of what was written by a reader on a way I didn’t mention that could be used to impose term limits on U.S. Congress:

…individual states could pass term limit legislation whereby it becomes illegal for a citizen of that state to run more than one or two, whatever, times for federal office. That would instantly prevent any citizen from that state from running more than the specified number of times for Congress or president.

Been tried, and precedent is not on our side. In the 1995 case of U.S. Term Limits v. Thornton, the U.S. Supreme Court, in a 5-4 vote, ruled that states could not impose term limits in Congress.

Unfortunately, U.S. Congress now appears to have all the angles covered.